Loss circulation compositions (LCM) having portland cement clinker
Portland cement clinker LCMs that include Portland cement clinker to mitigate or prevent lost circulation in a well are provided. A Portland cement clinker LCM may include Portland cement clinker, Portland cement, a carrier fluid, and an inorganic consolidation activator. Another Portland cement clinker LCM may include Portland cement clinker and a crosslinked fluid, such as a polyuronide crosslinked via calcium ions or a polysaccharide crosslinked via divinyl sulfone. Yet another Portland cement clinker LCM may include Portland cement clinker and polymer fibers or particulate glass. Methods of lost circulation control using a Portland cement clinker LCM are also provided.
1. A method to control lost circulation in a lost circulation zone in a wellbore, comprising:
introducing a lost circulation material (LCM) into the wellbore such that the LCM contacts the lost circulation zone and reduces a rate of lost circulation into the lost circulation zone as compared to a period before introducing the LCM, wherein the LCM comprises:
Portland cement clinker, wherein the Portland cement clinker consists of non-hydraulic, non-cementiceous unground Portland cement clinker particles;
a polysaccharide; and
divinyl sulfone (DVS), the polysaccharide selected to crosslink in the presence of the DVS.
2. The method of claim 1 , wherein the Portland cement clinker is selected from the group consisting of ASTM International Type I cement clinker, ASTM International Type V cement clinker, API Class A cement clinker, and API Class G cement clinker.
3. The method of claim 1 , wherein the polysaccharide comprises at least one of:
xanthan gum, hydroxyethyl cellulose, diutan gum, welan gum and guar gum.
4. The method of claim 1 , wherein the polysaccharide comprises a combination of xanthan gum and guar gum.
5. The method of claim 1 , wherein the polysaccharide comprises an amount in the range of 0.5 weight of the total weight (w/w %) to 0.8 w/w %.
6. The method of claim 1 , wherein the weight ratio of polysaccharide to DVS in the range of about 1:1 to 1:0.5.
7. The method of claim 1 , wherein the cement clinker comprises a plurality of particles each having a diameter greater than 1 centimeter.
8. The method of claim 1 , comprising maintaining the LCM in contact with the lost circulation zone for a time period, such that the LCM forms at least one plug.
9. The method of claim 8 , wherein the time period is in the range of 24 hours to 76 hours.
10. The method of claim 1 , wherein the lost circulation zone is located in a karst formation.
11. The method of claim 1 , wherein introducing a lost circulation material (LCM) into the wellbore comprises:
mixing the LCM with water; and
pumping the mixture into the lost circulation zone.
12. The method of claim 1 , wherein the LCM composition consists of:
Portland cement clinker, wherein the Portland cement clinker consists of non-hydraulic, non-cementiceous unground Portland cement clinker particles;
a polysaccharide;
divinyl sulfone (DVS), the polysaccharide selected to crosslink in the presence of the DVS.